Where to implement QoS ???

Hi All,
I have the following scenario that i attached a jpg for !!
My router (RouterB) is connected to my ISPs router (RouterA) All my incoming traffic is through routerA.
After my RouterB i have a PIX515 with inside network and DMZ on the DMZ i have aproxy for internet access.
My connection between routers is only 256kbps, and the internet usage is hogging the line most of the time.
im not interested in other methods of controlling traffic on the proxy etc but rather perform QoS to allocate PRIORITY traffic to the PC1 and to a specific port for an aplication its using, as it becomes dead slow because the FR (256kbps) is hogged by internet traffic.
I do not have access to routerA. i have access to RouterB and PIX515.
My question is:
Router B is not aware of my QoS problems. if i configure QoS to prioritize traffic for PC1 where should i configure it..on routerB or on PIX515 !!! and which interface is the most effective.
I cannot help of thinking that routerA will send traffic to routerB as it is requested by the internet users and the appicaton of PC1. the internet users being more demanging than the PC1 application wont they stil hog up the bandwidth...or when i configure QoS on either of my machines will 'somehow tell' router A to limit its traffic to the proxy ???
with the above i mean that...if i have internet traffic of 200kbps and my application traffic is needing 200 kbps as well..Router A will send the internet traffic and application traffic as it comes on its interfaces (without QoS) and spitting it out the FR link with the same rates...so if it is already sending streams of 200kbps internet traffic. i will still only get 56 kbps for my application, untill the internet traffic dies down ??? (im confused)
please let me know if i am not clear with my request !!!
Thank you,
George

Hi jon,
so...in a few words theres nothing that can be done !!!! :( (on the QoS side) ...
so..in order for the QoS to work efficiently it should be configured at the source, where a HIGH BANDWIDTH Input is present (like 100Mbps ) and a smaller bandwidth output interface (2Mbps lets say ) in order for a QUEUE to be created !!! RIGHT !!! ???? so if in the node i want to apply QoS, a QUEUE is not created for traffic towards my machines i can only pray !!! So i would have to talk to the guys on RouterA ??? to apply QoS and prioritize traffic on their router (where a queue is being created !!!)
Did i get this right then ???
Thanks for the help,
George

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How to implement QoS over UDP ?

Hi
Excuse me fo my poor english.
Is-it possible to implement QoS with java and socket UDP ?
Thanks

The term QoS means a number of different things. Which one do you mean? See here: http://en.wikipedia.org/wiki/Quality_of_service
Are you sure you want to use UDP? It is an unreliable protocol, and often takes quite a bit of work to use properly.
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Implementing QOS

I want to implement QOS for VOIP traffic between Branch Office IP phones and Headoffice PABX.
Basic network diagram is as follows
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|
L2 ordinary Switch
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Cisco 1841
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-----MPLS WAN-----
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Cisco 1841
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Cisco ASA
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Cisco 3560 (with multiple VLANs)
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Regards,
Muhammad

hello muhammad,
you will need to configure a low-latency queueing strategy giving priority & bandwidth allocation to voice traffic. you can use this sample config and build upon this:
router(config)# class-map voice
router(config-cmap)# match access-group 102
router(config)# policy-map policy1
router(config-pmap)# class voice
router(config-pmap-c)# priority 50
router(config-pmap)# class bar
router(config-pmap-c)# bandwidth 20
router(config-pmap)# class class-default
router(config-pmap-c)# fair-queue
router(config)# access-list 102 permit udp host 10.10.10.10 host 10.10.10.20 range
16384 20000
router(config)# access-list 102 permit udp host 10.10.10.10 host 10.10.10.20 range
53000 56000
interface serial0/1
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http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t2/ftllqpct.htm
hope this helps..all the best.. rate replies if found useful..
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http://goatnetworking.com/CiscoCSwitchQOSConfig.php
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We have this:
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Hi,
Qos should be applied to ORtr1 FE, ORtr2 512k, ORtr3 (?) T1.
On ORtr2 and ORtr3 - connected through T1 - you can use f.e. your posted policy.
The tricky one is ORtr1 and your policy will not work. The underlying reason is: you are configuring queueing and it will only be involved IF the physical interface is overloaded. This means that there should be more than 100 Mbps traffic before your config is involved. Obviously the problem occurs already if there is more than 512k.
The solution to the problem is called "nested policy". It would look like this taking your initial policy:
interface FastEthernet0/0
service-policy output Shape512k
Class-map voice-signaling
match access-group 102
class-map voice-traffic
match access-group 101
policy-map OUR-POLICY
class voice-traffic
priority 64
class voice-signaling
bandwidth 16
class class-default
fair-queue
policy-map Shape512k
class class-default
shape 500
service-policy output OUR-POLICY
access-list 101 permit udp any any range 16384 32767
access-list 102 permit tcp any eq 1720 any
access-list 102 permit tcp any any eq 1720
The policy Shape512k will only allow 500 kbps to pass through the F0/0 interface. Once this SHAPER is overloaded you apply the policy OUR-POLICY to prioritize voip.
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Implemention QOS for Voice

Hi,
We have a 2Mbps LL 1:4
we are using CSICO ATA for Voice.
we are using cisco 2620 router .
Here are my questions.
1.Kindly check My config and say whether this QOS config will work for prioritising the Voice.
class-map match-all VOIP-RTP
match ip dscp ef
policy-map VOICE-QOS
class VOIP-RTP
priority 1024
interface Serial0/0
description ### STPI-GATEWAY-VASHI ###
bandwidth 2048
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ip access-group 103 in
ip access-group 103 out
service-policy output VOICE-QOS
shutdown
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Ranga

A more scalable config (that you dont have to redo too much) might include bandwidth guarantees for other classes of traffic as well...
Also, I like to go with the qos design guide recommendation and set aside a queue for voice signalling... like the following...
i also dont "match ip dscp ef" but rather just look for rtp audio... dont always have a marking switch/phone system behind your router... sometimes its a whitebox phone system sending rtp packets, and a dumb switch... I also go with a nested policy, which shapes all to the speed of the link, then decides which traffic will follow the rules of the child policy to leave the single queue ;)
class-map match-any manage
match protocol dhcp
match protocol dns
match protocol kerberos
match protocol ldap
match protocol snmp
match protocol syslog
class-map match-any bulk
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match protocol ftp
match protocol pop3
match protocol smtp
class-map match-any voicesignal
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match protocol pcanywhere
match protocol secure-telnet
match protocol sqlnet
match protocol sqlserver
match protocol ssh
match protocol telnet
match protocol tsrvrdp
class-map match-any video
match protocol rtp video
match protocol cuseeme
match protocol netshow
match protocol rtsp
match protocol streamwork
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match protocol rtp audio
policy-map Pol-S0/0/0.1-child
class voicebearer
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priority percent 25
class transactional
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class voicesignal
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policy-map Pol-S0/0/0.1-parent
class class-default
shape average 1444000
service-policy Pol-0/0/0.1-child
int s0/0/0.1
service-policy output Pol-S0/0/0.1-parent
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Tschuss,
Joe

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Is it possible to have some sort of QoS on both sides of a VPN tunnel when the speed at the endpoint is unknown. In other words is it possible to have QoS bandwidth parameters to be automatically detected/adapted to the actual bandwidth?

Hey Martin,
Thanks for your reply. I Think IntServ won't be a solution straight away, I'll try to explain what I would like to do.
What my issue is that I have a few locations who are kind of mobile, and each location connects to the internet via various links, depending on which is available. This link can be a normal ISP which blocks all traffic except port 80 and 443. The connection could be a simple ISDN dialin or a dedicated T1 link.
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My idea was when I were able to set up a site-to-site SSL VPN tunnel to a router in a datacenter (using Array Network stuff if the Cisco can't do site-to-site SSL) I would have more control over the internetlink. I Would not be limited to using only port 80 and 443: all traffic would just go encrypted and look like normal HTTPS traffic.
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Qos standard vs priority vs hierarchical

Hi all,
I am really getting confused and have read lots of article and still don't fully get the queues on asa.
I know asa can support standard priority and hierarchical but here is what i don't understand
why can I not police priority queue? for instance police standard at 1mbps and police priority at 2mbps . this is so the priority will not take whatevery is available
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Hello ,
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why can I not police priority queue? for instance police standard at 1mbps and police priority at 2mbps . this is so the priority will not take whatevery is available
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Hello,
I would like to implement QoS on Pix 7.0(4). We connect to our customers using Cisco VPN client(remote access VPN).
I would like to prioritize this traffic, because these VPN connections are slow and e.g. browsing is fast.
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Many thanks,
Vladislav

! First match VPN traffic.
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I want to implement QoS over this link. Should i treat this as a normal P2P link and do the QoS or should i also need to ask the SP to do some sort of QoS in their MEN.
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You would need the QOS on the MAN connect as well. Even though you are running a L3 P2P link you are traversing multiple L2 hops.
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I believe in most cases your SP's 4 to 5 Classes would be good enough. Still you may want to understand his classes and also may want to negotiate the SLA terms.
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